Miner&#39;s acetylene-lamp.



Y. OHTSUKA.

MINERS AGBTYLENE LAMP. APPLICATION FILED PEB.4, 1914.

Patented Oct. 6, 1914.

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UNITED 1 STATES PATENT orrron.

YEIKIGHI OHTSUKA, or TOKYO, JAPAN.

Specification of Letters Patentw To all whom it may concern:

Be it known that I, YE-IKI HI OHTSUKfk, a Japanese subject, residing at Tokyo, in Japan,have invented certain new and useful Improvements in Miners" Acetylene-Lamps, of which the following is a full, clear, and exact description. This invention relates to an acetylene lamp whose upper-water chamber is con-v nected at its bottom edge withjfthe lowergas generating chamber by a connecting ring. The water drops on the top of a shallow 1 coneshaped perforated plate from the regulating valve in the bottom of the water chamber, and flows down toward the periphof the shell along the said perforated plate to be collected in the water groove formed in the connecting ring, for the purpose of keeping the packing material in the bottom of the said groove always in a wet state and perfectly air tight, Then the water flows out from the groove and down alongthe inside of the shellof the said gas generating chamber, where itcombines with calcium carbid and generates acetylene gas.

The. object of this invention is to obtain an acetylene lamp for mines which is simple and durable in construction, to maintain the action of lighting always perfect even should the lamp shell be deformed by severe shocking or dropping, or careless treatment 1n mines, and to hold the connection of two parts perfectly air tight by keeping the connecting part in a continuouslyfwet state by the water dropping down from the water chamber to the gas generating. chamber, whereby the escape of gas is prevented.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in both views. a

Figure 1 is a vertical sectional view, partly in elevation of the lamp constructed in accordance with the invention; and Fig. 2 is a plan view thereof;

In Fig. 1, 1 is the water chamber which forms the upper part of the lamp, and 2 is the gas generating. chamber forming its lower part, both shells being made by pressing from a metal plate. The water chamber 1 is ,made up from the outer shell and the bottom plate 3, which has a regulating valve disposed in a central position relative thereto. The valve comprises a screw seat 4 mounted in a depression in the. plate 3, and

groove 6 in the threaded part, .so that the quantity of water may be regulated by screwing the rod in or out, as may be desired. The lower end of the screw rod 5 is conically tapered and it fits a seat around a bottom hole or aperture 7 in thescrew seat 4, so the water can be perfectly closed. A shallow cone-shapcd perforated plate 8 under the bottom plate 3 has many perforations or holes 9 for escaping gas, and peripheral holes 15 for water, andqit is shell by a tongue piece 10. In this manner the water dropped downfrom the regulat- PatentedOct. 6, 1 914. Applicationfi1ed February4,1914. Serial No; 816,64. M

into and which has a longitudinal shallow attached to the i a screw rod or needle valve 5threaded therei ing valve, fioivstoward the periphery ofthe shell along the perforated plate 8 and to the water groove 21 in the connecting ring 22.

The connecting part is made up of the connecting ring 22, which has a circumferential water groove121, the r1ng beingfas manner I provide the connection of the two chambers. The bottom of the groove is stuffed with a packing material 13, and the internal flange 28 of the groove has notches 14 to permit the water to flow out. The water which collects in the water groove 21 keeps the packing material 13 and the con-.

tact surface always in wet state, and flows out through the notches 14: and down to the bottom along; the inside of the gas generating chamber, where it combines with calcium carbid, and liberates acetylene gas for lighting. Thus the connecting part of two chambers is always kept in wet state to render the connection perfectly air tight, and this is the characterized feature of my invention. The liberated gas passes through the holes 9 in the perforated plate 8 to the gas. space 24, where the dust or other impurities 1 are "deposited, the gas then passingto the gas burner 16, which has a nozzle 17.

Conveniently, the lamp may be provided with the reflector 18, the port or closed inlet 19 for pouring water into the water chamber, and the carrying handle 20, and the form of the chambers also may be properly modified, as shall be desired, without departing from the spirit of the invention. Having thus fully described my invention,

what 1 claim and desire to secure by Letters Patent of the United States is:

1. A11 acetylene lamp for mine use, comprising an upper water chamber, a lower gas-generating chamber, a connection for the chambershaving a groove, means for discharging water from'the water chamber to the gas generating chamber, said water passing into the groove to keep theco-nnecting part constantly in a wet state and air tight,

and means for efiecting the discharge of the s to discharge the same in the groove to maintain the packing ina wet state, the overflow passing into the generating chamber, and a burner communicating with the gas chamber.

3. An acetylene lamp, comprising an upper shell having a bottom dividing wall forming a water chamber, said wall having a central discharge opening, means cooperatlve with the openlng to control the dropplng of the water therethrough, a lower shell forming a gas-generating chamber, a ring connecting said shells,sa1d connectlon having a notched flange produclng a groove, a

packing material in the bottom of the said groove, an apertured cone mounted beneath her being adapted to contain calcium carbid,

which combines with the water to liberate acetylene gas, which escapes through the openings in the cone, and a burner carried by material and form an air-tight the upper shell and communicating with the gas space above the cone.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

. YEIKIGHI' ()HTSUKA.

Witnesses: Y

' NoBUJI TOUKAMOTO,

RIsPIoHI HATAKENAKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. v 

